[COMPATIBLE BATTERY] Compatible with a wide range of lithium ion batteries for flexibility and convenience. [IMPRESSIVE SOUND QUALITY] Delivers clear, deep sound for an exceptional listening experience. [DUAL CONNECTION MODES] Ensures stable Bluetooth connection and easy line-in connectivity for maximum versatility. [DUAL CHARGING PORTS] Features USB and Type C ports for simultaneous device charging, perfect for on-the-go users. [HIGH SAFETY] Equipped with low voltage preservation and auto shut-off for long-lasting durability and peace of mind.